Gary Weber is the pioneer and only person I am aware of who has presented the neuroscience side of meditation as it relates to the default mode network for a larger, non-medical audience. Without his work I probably wouldn’t have written my book in the first place, as this discovery is critical to bringing the whole picture into focus.
He was also one of the participants in the medical studies which were published in the National Academy of Sciences journal in 2011. This study, as well as several others also led by Dr. Judson Brewer, collectively form the basis for the whole DMN discussion as it correlates to the “ego” in traditional spiritual disciplines dating back thousands of years.
If you haven’t already, links to these studies are available on the ‘science’ page of the website as well as in longer form in my book.
Jeff Nirenberg 
Very interesting video! Have these thoughts developed among neuroscientists much since he made this video?
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The interest in DMN seems to have grown since then with other studies popping up, still pretty new area though
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